A device for confirming the flooding condition at the bottom of the elevator shaft

Abstract

Provided is an elevator confirmation device that can confirm whether there is water at the bottom of a shaft even without a water detector. The elevator confirmation device comprises: a receiving unit that receives information; a storage unit that stores information; and a control unit that causes a monitoring device of the elevator to cause a camera device provided in a car of the elevator to capture an image of the bottom of the shaft based on information other than information from the water detector that detects water at the bottom of the shaft of the elevator, and then causes the monitoring device to send information of the image of the bottom of the shaft, and then causes the storage unit to store the information of the image of the bottom of the shaft when the receiving unit receives the information.

Description

Technical Field

[0001] The invention relates to a confirmation device for confirming the flooding condition of the bottom of an elevator shaft. Background Art

[0002] Patent Document 1 discloses a confirmation system for an elevator. According to this confirmation system, it is possible to confirm whether there is water infiltration at the bottom of the hoistway.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2008-290842 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, the confirmation system described in Patent Document 1 requires a water submersion detector, so the confirmation system becomes complicated.

[0008] The present invention is made to solve the above-mentioned problems. An object of the present invention is to provide an elevator confirmation device that can confirm whether there is water in the bottom of the hoistway even without a water inundation detector.

[0009] Means for solving problems

[0010] The confirmation device of the elevator of the present invention comprises: a receiving unit that receives information; a storage unit that stores information; and a control unit that causes the elevator's monitoring device to cause a camera device installed in the elevator car to capture an image of the bottom of the elevator shaft based on information other than information from a water immersion detector that detects water immersion at the bottom of the elevator shaft, and then causes the monitoring device to send information about the image of the bottom of the shaft, and then when the receiving unit receives the information, causes the storage unit to store the information about the image of the bottom of the shaft.

[0011] The elevator confirmation device of the present invention comprises: a sending unit that sends information; a receiving unit that receives information; a storage unit that stores information; an accumulation unit that stores a plurality of rainfall performance value information at positions where a plurality of elevators are respectively installed and performance information on whether or not the bottom of the shaft of the plurality of elevators is flooded, respectively in correspondence with each other; an evaluation unit that quantitatively evaluates the possibility of flooding at the bottom of the shaft for the plurality of elevators based on a comparison result between the rainfall prediction value information at the current moment and the information accumulated in the accumulation unit; and a selection unit that selects a plurality of candidate elevators from the plurality of elevators based on the evaluation result of the evaluation unit; and a control unit, which causes the sending unit to send information instructing the monitoring devices of the multiple candidate elevators selected by the selecting unit to collect images of the bottom of the shaft, and then causes the monitoring devices of the multiple candidate elevators to instruct the multiple candidate elevators to collect images of the bottom of the shaft according to the information, and then causes the multiple camera devices respectively arranged in the cars of the multiple candidate elevators to collect images of the bottom of the shaft respectively, and then causes the monitoring devices of the multiple candidate elevators to send information on the images of the bottom of the shaft respectively, and then when the receiving unit receives the information, causes the storage unit to store the information on the images of the bottom of the shaft of the multiple candidate elevators.

[0012] Effects of the Invention

[0013] According to the present invention, the confirmation device stores the image information of the shaft bottom based on information other than the information from the flooding detector. Therefore, even without the flooding detector, it is possible to confirm whether the shaft bottom is flooded. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a configuration diagram of an elevator system to which the confirmation device for an elevator according to the first embodiment is applied.

[0015] Figure 2 This is a block diagram of a WEB server serving as the confirmation device for the elevator according to the first embodiment.

[0016] Figure 3 This is a flowchart for explaining the outline of the operation of the WEB server as the confirmation device for the elevator according to the first embodiment.

[0017] Figure 4 This is a hardware configuration diagram of a WEB server serving as the confirmation device for the elevator according to the first embodiment.

[0018] Figure 5 This is a block diagram of a WEB server serving as a confirmation device for an elevator according to the second embodiment.

[0019] Figure 6 This is a flowchart for explaining the outline of the operation of the WEB server as the confirmation device for the elevator according to the second embodiment. DETAILED DESCRIPTION

[0020] The embodiments are described with reference to the accompanying drawings. In addition, in each figure, the same reference numerals are given to the same or corresponding parts, and the repeated description of the parts is appropriately simplified or omitted.

[0021] Implementation method 1.

[0022] Figure 1 This is a configuration diagram of an elevator system to which the confirmation device for an elevator according to the first embodiment is applied.

[0023] exist Figure 1 In the elevator system, a hoistway 1 passes through each floor of a building (not shown). A traction machine 2 is installed on the upper part of the hoistway 1. A main rope 3 is hung around the traction machine 2.

[0024] A pair of car guide rails 4 are provided inside the hoistway 1. The longitudinal direction of each of the pair of car guide rails 4 is the vertical direction. A car 5 is provided inside the hoistway 1. The car 5 is supported from below on one side of the main rope 3. The car 5 is guided in the vertical direction by the pair of car guide rails 4.

[0025] A pair of counterweight side guide rails 6 are provided inside the hoistway 1. The length direction of each of the pair of counterweight side guide rails 6 is the vertical direction. A counterweight 7 is provided inside the hoistway 1. The upper portion of the counterweight 7 is supported on the other side of the main rope 3. The counterweight 7 is guided in the vertical direction by the pair of counterweight side guide rails 6.

[0026] The speed governor 8 is arranged at the upper part of the hoistway 1. The tensioning wheel 9 is arranged at the lower part of the hoistway 1. The speed governor rope 10 is arranged in a ring shape. The speed governor rope 10 is hung around the speed governor 8 and the tensioning wheel 9.

[0027] The socket 11 is provided at the lower part of the car 5. The adapter 12 is mechanically and electrically connected to the socket 11 at the lower part of the car 5. The lighting 13 is mechanically and electrically connected to the adapter 12 at the lower part of the car 5.

[0028] The camera device 14 is provided at the lower part of the car 5. One end of the power cord 15 is mechanically and electrically connected to the camera device 14. The plug 16 is mechanically and electrically connected to the other end of the power cord 15. The plug 16 is mechanically and electrically connected to the adapter 12.

[0029] The microphone 17 is installed on the upper part of the car 5 .

[0030] The control device 18 is disposed at the upper portion of the hoistway 1 .

[0031] The monitoring device 19 is installed in the upper part of the shaft 1. The monitoring device 19 is electrically connected to the control device 18, the socket 11 and the microphone 17.

[0032] The first communication terminal 20 is owned by the owner of the elevator.

[0033] The confirmation system 21 is installed at a place away from the building where the elevator is installed. For example, the confirmation system 21 is installed in a maintenance company of the elevator. For example, the confirmation system 21 includes a processing device 22, an input device 23, and a display device 24.

[0034] The second communication terminal 25 is installed around the confirmation system 21 .

[0035] For example, the WEB server 26 is installed as a confirmation device at the same place as the confirmation system 21. For example, the WEB server 26 is installed as a confirmation device at a different place from the confirmation system 21. The WEB server 26 is installed so as to be able to communicate with the monitoring device 19 through the monitoring line. The WEB server 26 is installed so as to be able to communicate with the processing device 22.

[0036] exist Figure 1 In the elevator, the control device 18 rotates the traction machine 2. The main rope 3 moves following the rotation of the traction machine 2. The car 5 and the counterweight 7 follow the movement of the main rope 3 and rise and fall in opposite directions. At this time, the speed governor rope 10 moves following the rise and fall of the car 5. The speed governor 8 rotates following the movement of the speed governor rope 10. The control device 18 recognizes the position of the car 5 in the vertical direction based on the rotation speed of the speed governor 8.

[0037] When a typhoon or heavy rain occurs, in the elevator maintenance company, the person in charge inputs information indicating the image collection at the bottom of the shaft 1 into the monitoring device 19 by operating the input device 23. For example, the person in charge inputs the registration information of the preset "image collection" according to the content displayed on the display device 24.

[0038] The WEB server 26 receives information from the input device 23 through the processing device 22. Based on the information from the input device 23, the WEB server 26 sends information instructing the monitoring device 19 to collect an image of the bottom of the shaft 1 through the monitoring line.

[0039] The monitoring device 19 transmits information instructing the control device 18 to move the car 5 to the lower part of the hoistway 1 based on the information from the WEB server 26 .

[0040] The control device 18 moves the car 5 to the lower part of the hoistway 1 based on the information from the monitoring device 19. For example, the control device 18 moves the car 5 to the lowest floor. For example, the control device 18 moves the car 5 to the floor above the lowest floor.

[0041] After the car 5 reaches the lower part of the hoistway 1, the monitoring device 19 supplies power to the socket 11. A part of the power is supplied to the lighting 13 through the adapter 12. The other part of the power is supplied to the camera 14 through the adapter 12, the plug 16 and the power cord 15.

[0042] The lighting 13 is lit by receiving power supply. The imaging device 14 is supplied with power to capture an image of the bottom of the shaft 1.

[0043] The monitoring device 19 acquires the image information of the bottom of the shaft 1 from the imaging device 14. The monitoring device 19 transmits the image information of the bottom of the shaft 1 to the WEB server 26 via the monitoring line.

[0044] The web server 26 stores the image information of the bottom of the shaft 1 from the monitoring device 19. The web server 26 causes the display device 24 to display the image information of the bottom of the shaft 1 via the processing device 22.

[0045] The person in charge determines whether the bottom of the shaft 1 is flooded by visually checking the information displayed on the display device 24 .

[0046] Next, use Figure 2 The web server 26 will be described.

[0047] Figure 2 This is a block diagram of a WEB server serving as the confirmation device for the elevator according to the first embodiment.

[0048] like Figure 2 As shown, the web server 26 includes a transmission unit 26a, a reception unit 26b, a storage unit 26c, and a control unit 26d.

[0049] The transmission unit 26a is configured to be able to transmit information. The reception unit 26b is configured to be able to receive information. The storage unit 26c is configured to be able to store information. The control unit 26d is configured to be able to control the operations of the transmission unit 26a, the reception unit 26b, and the storage unit 26c.

[0050] For example, the control unit 26d causes the sending unit 26a to send information instructing the monitoring device 19 to collect an image of the shaft 1 according to the operation of the input device 23. For example, when the receiving unit 26b receives image information of the bottom of the shaft 1 from the monitoring device 19, the storage unit 26c stores the information. For example, the control unit 26d causes the display device 24 to display the image information of the bottom of the shaft 1 stored in the storage unit 26c.

[0051] Next, use Figure 3 The outline of the operation of the web server 26 will be described.

[0052] Figure 3This is a flowchart for explaining the outline of the operation of the WEB server as the confirmation device for the elevator according to the first embodiment.

[0053] In step S1, the web server 26 determines whether information indicating the acquisition of an image of the bottom of the shaft 1 is input from the input device 23. When information indicating the acquisition of an image of the bottom of the shaft 1 is not input in step S1, the web server 26 repeatedly performs the action of step S1. When information indicating the acquisition of an image of the bottom of the shaft 1 is input in step S1, the web server 26 performs the action of step S2.

[0054] In step S2, the web server 26 transmits information instructing the monitoring device 19 to collect an image of the bottom of the shaft 1. Then, the web server 26 performs the operation of step S3. In step S3, the web server 26 determines whether the image information of the bottom of the shaft 1 is received from the monitoring device 19.

[0055] When the image information of the bottom of the shaft 1 is not received in step S3, the WEB server 26 repeats the operation of step S3. When the image information of the bottom of the shaft 1 is received in step S3, the WEB server 26 performs the operation of step S4.

[0056] In step S4, the WEB server 26 stores the image information of the bottom of the shaft 1. Then, the WEB server 26 performs the operation of step S5. In step S5, the WEB server 26 causes the display device 24 to display the image information of the bottom of the shaft 1. Then, the WEB server 26 ends the operation.

[0057] According to the first embodiment described above, the web server 26 stores the image information of the bottom of the shaft 1 collected by the camera 14 based on the information other than the information from the flood detector that detects the flooding at the bottom of the shaft 1 by the monitoring device 19. Therefore, even if there is no flood detector, it is possible to confirm whether there is flooding at the bottom of the shaft 1 in a short time without moving to the site. In this case, the stop time of the elevator for investigation is reduced. Therefore, the elevator can be continuously used.

[0058] Furthermore, the web server 26 causes the display device 24 to display image information of the bottom of the shaft 1. Therefore, the person in charge can visually check whether the bottom of the shaft 1 is flooded.

[0059] Furthermore, the web server 26 transmits information instructing the monitoring device 19 to capture an image of the bottom of the shaft 1 in response to an operation of the input device 23. Therefore, the person in charge can determine whether to check whether the bottom of the shaft 1 is flooded or not.

[0060] In addition, when the car 5 has moved to the lower part or the upper part of the shaft 1, the monitoring device 19 may determine whether to make the camera 14 collect an image of the bottom of the shaft 1 based on the information of the sound collected by the microphone 17. Specifically, in the monitoring device 19, when the sound of the car 5 or the counterweight 7 immersed in the water accumulated at the bottom of the shaft 1 is collected, the camera 14 may be made to collect an image of the bottom of the shaft 1. In this case, it is also possible to confirm whether the bottom of the shaft 1 is immersed in water.

[0061] In addition, it is also possible to be set as when the owner of the elevator uses the first communication terminal 20 to communicate with the second communication terminal 25, and the responsible person confirms whether there is flooding at the bottom of the hoistway 1 of the elevator according to the request from the owner. In this case, it is also possible to more efficiently confirm whether there is flooding at the bottom of the hoistway 1.

[0062] Next, use Figure 4 An example of the WEB server 26 will be described.

[0063] Figure 4 This is a hardware configuration diagram of a WEB server serving as the confirmation device for the elevator according to the first embodiment.

[0064] Each function of the web server 26 can be realized by a processing circuit. For example, the processing circuit includes at least one processor 100a and at least one memory 100b. For example, the processing circuit includes at least one dedicated hardware 200.

[0065] When the processing circuit has at least one processor 100a and at least one memory 100b, each function of the web server 26 is implemented by software, firmware, or a combination of software and firmware. At least one of the software and firmware is described as a program. At least one of the software and firmware is stored in at least one memory 100b. At least one processor 100a implements each function of the web server 26 by reading and executing the program stored in at least one memory 100b. At least one processor 100a is also called a central processing unit, a computing device, a microprocessor, a microcomputer, or a DSP. For example, at least one memory 100b is a non-volatile or volatile semiconductor memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), a disk, a floppy disk, an optical disk, a CD (compact disk), a mini disc, a DVD (Digital Versatile Disk), etc.

[0066] In the case where the processing circuit has at least one dedicated hardware 200, the processing circuit is implemented by, for example, a single circuit, a composite circuit, a programmable processor, a parallel programmable processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. For example, each function of the WEB server 26 can be implemented by the processing circuit separately. For example, each function of the WEB server 26 can be implemented collectively by the processing circuit.

[0067] The functions of the web server 26 may be partially implemented by dedicated hardware 200, and the other parts may be implemented by software or firmware. For example, the functions of the control unit 26d may be implemented by a processing circuit as dedicated hardware 200, and the functions other than the functions of the control unit 26d may be implemented by at least one processor 100a reading and executing a program stored in at least one memory 100b.

[0068] In this way, the processing circuit implements each function of the web server 26 through hardware 200, software, firmware, or a combination thereof.

[0069] Although not shown, each function of the control device 18 and each function of the monitoring device 19 may be realized by a processing circuit equivalent to the processing circuit that realizes each function of the web server 26. Each function of the processing device 22 may also be realized by a processing circuit equivalent to the processing circuit that realizes each function of the web server 26.

[0070] Implementation method 2.

[0071] Figure 5 This is a block diagram of a web server as an elevator confirmation device according to Embodiment 2. In addition, the same reference numerals are given to the same or corresponding parts as those in Embodiment 1. The description of such parts will be omitted.

[0072] like Figure 5 As shown, the web server 26 includes a storage unit 26e, an evaluation unit 26f, and a selection unit 26g in addition to the transmission unit 26a, the reception unit 26b, the storage unit 26c, and the control unit 26d.

[0073] The transmission unit 26a is configured to be able to transmit information, the reception unit 26b is configured to be able to receive information, and the storage unit 26c is configured to be able to store information.

[0074] The storage unit 26e is configured to store the plurality of rainfall performance value information at the positions where the plurality of elevators are respectively installed and the performance information of whether the bottom of the shaft 1 of the plurality of elevators is flooded. The evaluation unit 26f is configured to quantitatively evaluate the possibility of flooding at the bottom of the shaft 1 for the plurality of elevators based on the comparison result of the rainfall forecast value information at the current moment obtained from the meteorological bureau and the information accumulated in the storage unit. The selection unit 26g is configured to select a plurality of candidate elevators based on the evaluation result of the evaluation unit 26f from the plurality of elevators.

[0075] The control unit 26d is provided so as to be able to control the operations of the transmission unit 26a, the reception unit 26b, the storage unit 26c, the accumulation unit 26e, the evaluation unit 26f, and the selection unit 26g.

[0076] For example, the control unit 26d causes the sending unit 26a to send information instructing to collect images of the bottom of the shaft 1 to the monitoring devices 19 of the multiple candidate elevators selected by the selecting unit 26g. For example, when the receiving unit 26b receives the image information of the bottom of the shaft 1 from the multiple monitoring devices 19, the control device 18 causes the storage unit 26c to store the information of the bottom of the shaft 1 of the multiple candidate elevators. For example, the control unit 26d causes the display device 24 to display the image information of the bottom of the shaft 1 of the multiple candidate elevators stored in the storage unit 26c.

[0077] Next, use Figure 6 The outline of the operation of the web server 26 will be described.

[0078] Figure 6 This is a flowchart for explaining the outline of the operation of the WEB server as the confirmation device for the elevator according to the second embodiment.

[0079] In step S11, the web server 26 quantitatively evaluates the possibility of flooding at the bottom of the shaft 1 for a plurality of elevators based on the comparison result of the rainfall prediction value information at the current moment and the information accumulated in the accumulation unit 22e. Then, the web server 26 performs the operation of step S12. In step S12, the web server 26 displays the information indicating the plurality of elevators and the information indicating the possibility of flooding at the bottom of the shaft 1 on the display device 24 in correspondence. For example, the web server 26 causes the display device 24 to display the ranking of the plurality of elevators in descending order of the possibility of flooding at the bottom of the shaft.

[0080] Then, the WEB server 26 performs the operation of step S13. In step S13, the WEB server 26 determines whether any elevator is designated by the operation of the input device 23. When no elevator is designated in step S13, the WEB server 26 repeatedly performs the operation of step S13. When any elevator is designated in step S13, the WEB server 26 performs the operation of step S14.

[0081] In step S14, the web server 26 sets the elevator as a provisional candidate elevator. Then, the web server 26 performs the operation of step S15. In step S15, the web server 26 determines whether a registration request is made by the operation of the input device 23.

[0082] If the registration request is not made in step S15, the web server 26 performs the operation of step S13. If the registration request is made in step S15, the web server 26 performs the operation of step S16.

[0083] In step S16, the web server 26 sets the temporary candidate elevator at the current moment as the actual candidate elevator. Then, the web server 26 performs the operation of step S17. In step S17, the web server 26 instructs the monitoring device 19 of the elevator set as the actual candidate elevator to collect the image of the bottom of the shaft 1.

[0084] Then, the web server 26 performs the operation of step S18 . In step S18 , the web server 26 determines whether the image information of the bottom of the shaft 1 is received from the monitoring device 19 .

[0085] If the image information of the bottom of the shaft 1 is not received in step S18, the WEB server 26 repeats the operation of step S18. If the image information of the bottom of the shaft 1 is received in step S18, the WEB server 26 performs the operation of step S19.

[0086] In step S19, the web server 26 stores the image information of the bottom of the shaft 1. Then, the web server 26 performs the operation of step S20. In step S20, the web server 26 determines whether a display request is made by operation of the input device 23.

[0087] If it is determined in step S20 that a display request has not been made, the web server 26 performs the operation of step S18. If it is determined in step S20 that a display request has been made, the web server 26 performs the operation of step S21.

[0088] In step S21, the web server 26 causes the display device 24 to display the image information of the bottom of the shaft 1 according to the request. For example, the web server 26 causes the display device 24 to display all the information of the image stored at the current moment. For example, the web server 26 causes the display device 24 to display the image of the bottom of the shaft 1 of the designated elevator. Then, the web server 26 performs the action of step S18.

[0089] According to the second embodiment described in the above, the web server 26 instructs the monitoring device 19 of the elevator in which the shaft 1 is more likely to be flooded to collect an image of the bottom of the shaft 1. At this time, the possibility of flooding at the bottom of the shaft 1 is determined by taking into account the past rainfall performance value information and the performance information of whether the bottom of the shaft is flooded. For example, even if the predicted value of the rainfall at the current moment is small, if the bottom of the shaft 1 has been flooded due to the rainfall in the past, it is determined that the bottom of the shaft 1 is more likely to be flooded. Therefore, it is possible to more efficiently confirm whether the bottom of the shaft 1 is flooded for multiple elevators.

[0090] In addition, the web server 26 sets the elevator specified by the external information as the temporary candidate elevator, and sets the temporary candidate elevator at the current moment as the actual candidate elevator according to the external information. Therefore, the responsible person can efficiently confirm whether the bottom of the hoistway 1 of the elevator concerned is flooded.

[0091] In addition, it is also possible to stop the operation of the elevator when confirming that the bottom of the hoistway 1 is flooded. At this time, it is also possible to send information indicating that the elevator has stopped running and the information indicating that the maintenance personnel have been arranged towards the portable terminal of the user who frequently uses the elevator.

[0092] In addition, when it is confirmed that the bottom of the hoistway 1 is flooded, the car 5 of the elevator around the elevator is not moved to the lowest floor. For example, the car 5 of the elevator around the elevator can be moved to the uppermost floor. In this case, even if the bottom of the hoistway 1 of the elevator around the elevator is not confirmed to be flooded, the safety of the elevator around the elevator can be ensured.

[0093] The WEB server 26 of Embodiment 1 or 2 may be applied to an elevator in which the hoisting machine 2, control device 18, and monitoring device 19 are installed at the lower part of the hoistway 1 or an elevator in which the hoisting machine 2, control device 18, and monitoring device 19 are installed in a machine room.

[0094] Industrial Applicability

[0095] As described above, the confirmation device for an elevator according to the present invention can be used in an elevator system.

[0096] Description of symbols

[0097] 1: hoistway; 2: traction machine; 3: main rope; 4: car guide rail; 5: car; 6: counterweight side guide rail; 7: counterweight; 8: speed limiter; 9: tension pulley; 10: speed limiter rope; 11: socket; 12: adapter; 13: lighting; 14: camera device; 15: power cord; 16: plug; 17: microphone; 18: control device; 19: monitoring device; 20: first communication terminal; 21: confirmation system; 22: processing device; 23: input device; 24: display device; 25: second communication terminal; 26: WEB server; 26a: sending unit; 26b: receiving unit; 26c: storage unit; 26d: control unit; 26e: accumulation unit; 26f: evaluation unit; 26g: selection unit; 100a: processor; 100b: memory; 200: hardware.

Claims

1. A confirmation device for an elevator, wherein: The confirmation device of the elevator comprises: a receiving unit that receives information; a storage unit that stores information; and a control unit that causes a monitoring device of an elevator to cause a camera device disposed at a lower portion of a car of the elevator to capture an image of the bottom of the shaft based on information other than information from a water flooding detector that detects water flooding at the bottom of the shaft of the elevator, and then causes the monitoring device to transmit information of the image of the bottom of the shaft, and then causes the storage unit to store the information of the image of the bottom of the shaft when the receiving unit receives the information, The control unit causes the monitoring device to determine whether to cause the camera device to capture an image of the bottom of the shaft based on information about sounds collected by a microphone installed in the car when the car has moved to the lower part or the upper part of the shaft, wherein the camera device is caused to capture an image of the bottom of the shaft when sounds of the car or the counterweight being immersed in water accumulated at the bottom of the shaft are collected, Then, the monitoring device is caused to transmit the image information of the bottom of the shaft, and when the receiving unit receives the information, the storage unit is caused to store the image information of the bottom of the shaft, Here, whether the bottom of the shaft is flooded is confirmed based on the image of the bottom of the shaft stored in the storage unit.

2. The confirmation device for an elevator according to claim 1, wherein: The control unit causes a display device to display information of the image of the shaft bottom stored in the storage unit.

Images